2 Unitary Products Group
036-21560-001 Rev. A (0204)
Three elbows (two in vent pipe and one in the air intake pipe) are already accounted for and need not be included in the elbow count
from the Table above.
28-1/2
26-1/2
24-5/8
40
A
26-1/2
25-3/8
C
19-1/4
1-1/4
1-1/4
21-5/8
29
21-7/8
11-11/16
18-1/2
7-1/2
29
21-15/16
21-9/16
18-1/2
9-1/8
8-1/2
5/8
5/8
23-5/8
D
2-1/4
23-1/4
20
B
T’STATWIRING
7/8”K.O.
HORIZONTAL
CONDENSATE
DRAIN2”K.O.
7/8”JUNCTION
BOXHOLE
1-1/2”GAS
PIPEENTRY
CONDENSATE
DRAIN7/8”K.O.
T’STATWIRING
7/8”K.O.
HORIZONTAL
CONDENSATE
DRAIN2”K.O.
7/8”JUNCTION
BOXHOLE
1-1/2”GAS
PIPEENTRY
CONDENSATE
DRAIN7/8”K.O.
BOTTOMIMAGE
RETURNEND
TOPIMAGE
SUPPLYEND
BTUH (kW)
Input/Output
CFM
Cabinet
Size
Cabinet Dimension
A (in.) A (cm) B (in.) B (cm) C (in.) C (cm) D (in.) D (cm)
60/55 (17.57/16.10) 1200 (33.98) B 17-1/2 44.4 16-1/4 41.3 15-1/8 38.4 1-3/4 4.44
80/75 (23.42/21.96) 1200 (33.98) B 17-1/2 44.4 16-1/4 41.3 15-1/8 38.4 1-3/4 4.44
80/75 (23.42/21.96) 1600 (45.31) C 21 53.3 19-3/4 50.2 18-1/2 47.0 2-1/8 5.40
100/95 (29.28/27.82) 1600 (45.31) C 21 53.3 19-3/4 50.2 18-1/2 47.0 2-1/8 5.40
100/95 (29.28/27.82) 2000 (56.63) C 21 53.3 19-3/4 50.2 18-1/2 47.0 2-1/8 5.40
120/112 (35.14/32.80) 2000 (56.63) D 24-1/2 62.2 23-1/4 59.1 21-7/8 55.6 2-1/2 6.35
COMBUSTION AIR SUPPLY AND VENT PIPING
MAXIMUM ELBOWS AND VENT LENGTHS
Models Input
BTUH (kW)
Pipe Size
Inches (mm)
Maximum Number of Elbows*
Minimum
Length
1 2 3 4 5 6 7 8
60,000 (17.6) 1-1/2 (38) 15 10 N/A N/A N/A N/A N/A N/A 1.5
60,000 (17.6) 2 (51) 60 55 50 45 40 35 25 15 1.5
60,000 (17.6) 3 (76) 85 80 75 70 65 60 50 40 10
80,000 (23.4)/1200 2 (51) 60 55 50 45 40 35 25 15 1.5
80,000 (23.4)/1200 3 (76) 85 80 75 70 65 60 50 40 10
80,000 (23.4)/1600 2 (51) 25 20 15 10 N/A N/A N/A N/A 1.5
80,000 (23.4)/1600 3 (76) 85 80 75 70 65 60 50 40 10
100,000 (29.3) 2 (51) 25 20 15 10 N/A N/A N/A N/A 1.5
100,000 (29.3) 3 (76) 80 75 70 65 60 55 45 35 1.5
120,000 (35.1) 3 (76) 55 50 45 40 35 25 15 N/A 1.5
